<?php

defined('BASEPATH') OR exit('No direct script access allowed');

class Auth extends CI_Controller {

    function __construct() {
        parent::__construct();
        $this->load->library('ion_auth');
        $this->load->library('form_validation');
        $this->load->helper('url');
        
        $this->load->library('twig'); // load the Twig library
        // map CI functions as a Twig functions
            $this->twig->add_function('base_url'); 
            $this->twig->add_function('form_input');
            $this->twig->add_function('form_error');
            $this->twig->add_function('lang');
        
        $this->load->database();
        $this->form_validation->set_error_delimiters($this->config->item('error_start_delimiter', 'ion_auth'), $this->config->item('error_end_delimiter', 'ion_auth'));
        $this->lang->load('auth');
        $this->load->helper('language');
    }

    //redirect if needed, otherwise display the user list
    //SE PUEDE BORRAR PORQUE SE UTILIZA EL CONTROLADOR COMPLEJOS PARA HACER LO MISMO
    function index() {
        //redirect them to the login page
        redirect('home', 'refresh');
    }

    //show control panel for logged in users
    function control_panel() {
        if ($this->ion_auth->logged_in()) {
            $arrayData = Array('title' => 'Panel de Control',
                'is_login' => TRUE,
                'is_admin' => $this->ion_auth->is_admin(),
                'user' => $this->ion_auth->user()->row()
            );
            $this->twig->display('backend/index.html.twig', $arrayData);
        } else {
            redirect('auth/login', 'refresh');
        }
    }

    //log the user in
    function login() {
        $this->data['title'] = "Login";

        //validate form input
        $this->form_validation->set_rules('identity', 'Identity', 'required');
        $this->form_validation->set_rules('password', 'Password', 'required');

        if ($this->form_validation->run() == true) {
            //check to see if the user is logging in
            //check for "remember me"
            $remember = (bool) $this->input->post('remember');

            if ($this->ion_auth->login($this->input->post('identity'), $this->input->post('password'), $remember)) {
                //if the login is successful
                //redirect them back to the home page
                $this->session->set_flashdata('message', $this->ion_auth->messages());
                redirect('home', 'refresh');
            } else {
                //if the login was un-successful
                //redirect them back to the login page
                $this->session->set_flashdata('message', $this->ion_auth->errors());
                redirect('auth/login', 'refresh'); //use redirects instead of loading views for compatibility with MY_Controller libraries
            }
        } else {
            //the user is not logging in so display the login page
            //set the flash data error message if there is one
            $this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');

            $this->data['identity'] = array('name' => 'identity',
                'id' => 'identity',
                'type' => 'text',
                'value' => $this->form_validation->set_value('identity'),
            );
            $this->data['password'] = array('name' => 'password',
                'id' => 'password',
                'type' => 'password',
            );

            $this->_render_page('auth/login', $this->data);
        }
    }

    //log the user out
    function logout() {
        $this->data['title'] = "Logout";

        //log the user out
        $logout = $this->ion_auth->logout();

        //redirect them to the login page
        $this->session->set_flashdata('message', $this->ion_auth->messages());
        //redirect('auth/login', 'refresh');
        $arrayData = Array();
        $this->twig->display('frontend/index.html.twig', array('title' => "Bienvenido", 'data' => $arrayData));
    }

    //change password
    function change_password() {
        $this->form_validation->set_rules('old', $this->lang->line('change_password_validation_old_password_label'), 'required');
        $this->form_validation->set_rules('new', $this->lang->line('change_password_validation_new_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|max_length[' . $this->config->item('max_password_length', 'ion_auth') . ']|matches[new_confirm]');
        $this->form_validation->set_rules('new_confirm', $this->lang->line('change_password_validation_new_password_confirm_label'), 'required');

        if (!$this->ion_auth->logged_in()) {
            redirect('auth/login', 'refresh');
        }

        $user = $this->ion_auth->user()->row();

        if ($this->form_validation->run() == false) {
            //display the form
            //set the flash data error message if there is one
            $this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');

            $this->data['min_password_length'] = $this->config->item('min_password_length', 'ion_auth');
            $this->data['old_password'] = array(
                'name' => 'old',
                'id' => 'old',
                'type' => 'password',
            );
            $this->data['new_password'] = array(
                'name' => 'new',
                'id' => 'new',
                'type' => 'password',
                'pattern' => '^.{' . $this->data['min_password_length'] . '}.*$',
            );
            $this->data['new_password_confirm'] = array(
                'name' => 'new_confirm',
                'id' => 'new_confirm',
                'type' => 'password',
                'pattern' => '^.{' . $this->data['min_password_length'] . '}.*$',
            );
            $this->data['user_id'] = array(
                'name' => 'user_id',
                'id' => 'user_id',
                'type' => 'hidden',
                'value' => $user->id,
            );

            //render
            $this->_render_page('auth/change_password', $this->data);
        } else {
            $identity = $this->session->userdata('identity');

            $change = $this->ion_auth->change_password($identity, $this->input->post('old'), $this->input->post('new'));

            if ($change) {
                //if the password was successfully changed
                $this->session->set_flashdata('message', $this->ion_auth->messages());
                $this->logout();
            } else {
                $this->session->set_flashdata('message', $this->ion_auth->errors());
                redirect('auth/change_password', 'refresh');
            }
        }
    }

    //forgot password
    function forgot_password() {
        $this->form_validation->set_rules('email', $this->lang->line('forgot_password_validation_email_label'), 'required|valid_email');
        if ($this->form_validation->run() == false) {
            //setup the input
            $this->data['email'] = array('name' => 'email',
                'id' => 'email',
            );

            if ($this->config->item('identity', 'ion_auth') == 'username') {
                $this->data['identity_label'] = $this->lang->line('forgot_password_username_identity_label');
            } else {
                $this->data['identity_label'] = $this->lang->line('forgot_password_email_identity_label');
            }

            //set any errors and display the form
            $this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');
            $this->_render_page('auth/forgot_password', $this->data);
        } else {
            // get identity from username or email
            if ($this->config->item('identity', 'ion_auth') == 'username') {
                $identity = $this->ion_auth->where('username', strtolower($this->input->post('email')))->users()->row();
            } else {
                $identity = $this->ion_auth->where('email', strtolower($this->input->post('email')))->users()->row();
            }
            if (empty($identity)) {
                $this->ion_auth->set_message('forgot_password_email_not_found');
                $this->session->set_flashdata('message', $this->ion_auth->messages());
                redirect("auth/forgot_password", 'refresh');
            }

            //run the forgotten password method to email an activation code to the user
            $forgotten = $this->ion_auth->forgotten_password($identity->{$this->config->item('identity', 'ion_auth')});

            if ($forgotten) {
                //if there were no errors
                $this->session->set_flashdata('message', $this->ion_auth->messages());
                redirect("auth/login", 'refresh'); //we should display a confirmation page here instead of the login page
            } else {
                $this->session->set_flashdata('message', $this->ion_auth->errors());
                redirect("auth/forgot_password", 'refresh');
            }
        }
    }

    //reset password - final step for forgotten password
    public function reset_password($code = NULL) {
        if (!$code) {
            show_404();
        }

        $user = $this->ion_auth->forgotten_password_check($code);

        if ($user) {
            //if the code is valid then display the password reset form

            $this->form_validation->set_rules('new', $this->lang->line('reset_password_validation_new_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|max_length[' . $this->config->item('max_password_length', 'ion_auth') . ']|matches[new_confirm]');
            $this->form_validation->set_rules('new_confirm', $this->lang->line('reset_password_validation_new_password_confirm_label'), 'required');

            if ($this->form_validation->run() == false) {
                //display the form
                //set the flash data error message if there is one
                $this->data['message'] = (validation_errors()) ? validation_errors() : $this->session->flashdata('message');

                $this->data['min_password_length'] = $this->config->item('min_password_length', 'ion_auth');
                $this->data['new_password'] = array(
                    'name' => 'new',
                    'id' => 'new',
                    'type' => 'password',
                    'pattern' => '^.{' . $this->data['min_password_length'] . '}.*$',
                );
                $this->data['new_password_confirm'] = array(
                    'name' => 'new_confirm',
                    'id' => 'new_confirm',
                    'type' => 'password',
                    'pattern' => '^.{' . $this->data['min_password_length'] . '}.*$',
                );
                $this->data['user_id'] = array(
                    'name' => 'user_id',
                    'id' => 'user_id',
                    'type' => 'hidden',
                    'value' => $user->id,
                );
                $this->data['csrf'] = $this->_get_csrf_nonce();
                $this->data['code'] = $code;

                //render
                $this->_render_page('auth/reset_password', $this->data);
            } else {
                // do we have a valid request?
                if ($this->_valid_csrf_nonce() === FALSE || $user->id != $this->input->post('user_id')) {

                    //something fishy might be up
                    $this->ion_auth->clear_forgotten_password_code($code);

                    show_error($this->lang->line('error_csrf'));
                } else {
                    // finally change the password
                    $identity = $user->{$this->config->item('identity', 'ion_auth')};

                    $change = $this->ion_auth->reset_password($identity, $this->input->post('new'));

                    if ($change) {
                        //if the password was successfully changed
                        $this->session->set_flashdata('message', $this->ion_auth->messages());
                        $this->logout();
                    } else {
                        $this->session->set_flashdata('message', $this->ion_auth->errors());
                        redirect('auth/reset_password/' . $code, 'refresh');
                    }
                }
            }
        } else {
            //if the code is invalid then send them back to the forgot password page
            $this->session->set_flashdata('message', $this->ion_auth->errors());
            redirect("auth/forgot_password", 'refresh');
        }
    }

    //activate the user
    function activate($id, $code = false) {
        if ($code !== false) {
            $activation = $this->ion_auth->activate($id, $code);
        } else if ($this->ion_auth->is_admin()) {
            $activation = $this->ion_auth->activate($id);
        }

        if ($activation) {
            //redirect them to the auth page
            $this->session->set_flashdata('message', $this->ion_auth->messages());
            redirect("auth", 'refresh');
        } else {
            //redirect them to the forgot password page
            $this->session->set_flashdata('message', $this->ion_auth->errors());
            redirect("auth/forgot_password", 'refresh');
        }
    }

    //deactivate the user
    function deactivate($id = NULL) {
        $id = (int) $id;

        $this->load->library('form_validation');
        $this->form_validation->set_rules('confirm', $this->lang->line('deactivate_validation_confirm_label'), 'required');
        $this->form_validation->set_rules('id', $this->lang->line('deactivate_validation_user_id_label'), 'required|alpha_numeric');

        if ($this->form_validation->run() == FALSE) {
            // insert csrf check
            $this->data['csrf'] = $this->_get_csrf_nonce();
            $this->data['user'] = $this->ion_auth->user($id)->row();

            $this->_render_page('auth/deactivate_user', $this->data);
        } else {
            // do we really want to deactivate?
            if ($this->input->post('confirm') == 'yes') {
                // do we have a valid request?
                if ($this->_valid_csrf_nonce() === FALSE || $id != $this->input->post('id')) {
                    show_error($this->lang->line('error_csrf'));
                }

                // do we have the right userlevel?
                if ($this->ion_auth->logged_in() && $this->ion_auth->is_admin()) {
                    $this->ion_auth->deactivate($id);
                }
            }

            //redirect them back to the auth page
            redirect('auth', 'refresh');
        }
    }

    //create a new user
    function create_user() {
        $this->data['title'] = "Crear Complejo"; 

        if (!$this->ion_auth->logged_in() && !$this->ion_auth->is_admin()) {
            redirect('auth', 'refresh');
        }

        $tables = $this->config->item('tables', 'ion_auth');

        //validate form input
        $this->form_validation->set_rules('first_name', $this->lang->line('create_user_validation_fname_label'), 'required|xss_clean');
        $this->form_validation->set_rules('email', $this->lang->line('create_user_validation_email_label'), 'required|valid_email|is_unique[' . $tables['users'] . '.email]');
        $this->form_validation->set_rules('phone', $this->lang->line('create_user_validation_phone_label'), 'required|xss_clean');
        $this->form_validation->set_rules('address', $this->lang->line('create_user_validation_address_label'), 'required|xss_clean');
        $this->form_validation->set_rules('location', $this->lang->line('create_user_validation_location_label'), 'required|xss_clean');
        //$this->form_validation->set_rules('logo', $this->lang->line('create_user_validation_logo_label'), 'xss_clean');
        $this->form_validation->set_rules('password', $this->lang->line('create_user_validation_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|max_length[' . $this->config->item('max_password_length', 'ion_auth') . ']|matches[password_confirm]');
        $this->form_validation->set_rules('password_confirm', $this->lang->line('create_user_validation_password_confirm_label'), 'required');

        if ($this->form_validation->run() == true) {
            $username = strtolower($this->input->post('first_name'));
            $email = strtolower($this->input->post('email'));
            $password = $this->input->post('password');

            $additional_data = array(
                'first_name' => $this->input->post('first_name'),
                'location' => $this->input->post('location'),
                'address' => $this->input->post('address'),
                'phone' => $this->input->post('phone'),
                //'logo' => $this->input->post('logo'),
            );
        }
        if ($this->form_validation->run() == true && $this->ion_auth->register($username, $password, $email, $additional_data)) {
            //check to see if we are creating the user
            //set the message and back to the view
            $this->data['message'] = $this->ion_auth->messages();
            //redirect("auth", 'refresh');
        } /*else {
            //display the create user form
            //set the flash data error message if there is one
            $this->data['message_error'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));
        }*/
            $this->data['first_name'] = array(
                'name' => 'first_name',
                'id' => 'first_name',
                'type' => 'text',
                'class' => 'form-control', 
                'placeholder' => 'Nombre',
                'value' => $this->form_validation->set_value('first_name'),
            );
            $this->data['location'] = array(
                'name' => 'location',
                'id' => 'location',
                'type' => 'text',
                'class' => 'form-control', 
                'placeholder' => 'Localidad',
                'value' => $this->form_validation->set_value('location'),
            );
            $this->data['email'] = array(
                'name' => 'email',
                'id' => 'email',
                'type' => 'text',
                'class' => 'form-control', 
                'placeholder' => 'Email',
                'value' => $this->form_validation->set_value('email'),
            );
            $this->data['address'] = array(
                'name' => 'address',
                'id' => 'address',
                'type' => 'text',
                'class' => 'form-control', 
                'placeholder' => 'Dirección',
                'value' => $this->form_validation->set_value('address'),
            );
            $this->data['phone'] = array(
                'name' => 'phone',
                'id' => 'phone',
                'type' => 'text',
                'class' => 'form-control', 
                'placeholder' => 'Teléfono',
                'value' => $this->form_validation->set_value('phone'),
            );
            /*$this->data['logo'] = array(
                'name' => 'logo',
                'id' => 'logo',
                'type' => 'file',
                'value' => $this->form_validation->set_value('logo'),
            );*/
            $this->data['password'] = array(
                'name' => 'password',
                'id' => 'password',
                'type' => 'password',
                'class' => 'form-control', 
                'placeholder' => 'Contraseña',
                'value' => $this->form_validation->set_value('password'),
            );
            $this->data['password_confirm'] = array(
                'name' => 'password_confirm',
                'id' => 'password_confirm',
                'type' => 'password',
                'class' => 'form-control', 
                'placeholder' => 'Confirmar contraseña',
                'value' => $this->form_validation->set_value('password_confirm'),
            );

            //$this->_render_page('auth/create_user', $this->data);
            $this->twig->display('auth/create_user.html.twig', $this->data);
    }

    //edit a user
    function edit_user($id) {
        $this->data['title'] = "Edit User";

        if (!$this->ion_auth->logged_in() || (!$this->ion_auth->is_admin() && !($this->ion_auth->user()->row()->id == $id))) {
            redirect('auth', 'refresh');
        }

        $user = $this->ion_auth->user($id)->row();
        $groups = $this->ion_auth->groups()->result_array();
        $currentGroups = $this->ion_auth->get_users_groups($id)->result();

        //validate form input
        $this->form_validation->set_rules('first_name', $this->lang->line('edit_user_validation_fname_label'), 'required|xss_clean');
        $this->form_validation->set_rules('location', $this->lang->line('edit_user_validation_location_label'), 'required|xss_clean');
        $this->form_validation->set_rules('phone', $this->lang->line('edit_user_validation_phone_label'), 'required|xss_clean');
        $this->form_validation->set_rules('address', $this->lang->line('edit_user_validation_address_label'), 'required|xss_clean');
        $this->form_validation->set_rules('groups', $this->lang->line('edit_user_validation_groups_label'), 'xss_clean');
        //$this->form_validation->set_rules('logo', $this->lang->line('edit_user_validation_logo_label'), 'xss_clean');

        if (isset($_POST) && !empty($_POST)) {
            // do we have a valid request?
            if ($this->_valid_csrf_nonce() === FALSE || $id != $this->input->post('id')) {
                show_error($this->lang->line('error_csrf'));
            }

            $data = array(
                'first_name' => $this->input->post('first_name'),
                'location' => $this->input->post('location'),
                'address' => $this->input->post('address'),
                'phone' => $this->input->post('phone'),
                //'logo' => $this->input->post('logo'),
            );

            // Only allow updating groups if user is admin
            if ($this->ion_auth->is_admin()) {
                //Update the groups user belongs to
                $groupData = $this->input->post('groups');

                if (isset($groupData) && !empty($groupData)) {

                    $this->ion_auth->remove_from_group('', $id);

                    foreach ($groupData as $grp) {
                        $this->ion_auth->add_to_group($grp, $id);
                    }
                }
            }

            //update the password if it was posted
            if ($this->input->post('password')) {
                $this->form_validation->set_rules('password', $this->lang->line('edit_user_validation_password_label'), 'required|min_length[' . $this->config->item('min_password_length', 'ion_auth') . ']|max_length[' . $this->config->item('max_password_length', 'ion_auth') . ']|matches[password_confirm]');
                $this->form_validation->set_rules('password_confirm', $this->lang->line('edit_user_validation_password_confirm_label'), 'required');

                $data['password'] = $this->input->post('password');
            }

            if ($this->form_validation->run() === TRUE) {
                $this->ion_auth->update($user->id, $data);

                //check to see if we are creating the user
                //redirect them back to the admin page
                $this->session->set_flashdata('message', "User Saved");
                if ($this->ion_auth->is_admin()) {
                    redirect('auth', 'refresh');
                } else {
                    redirect('/', 'refresh');
                }
            }
        }

        //display the edit user form
        $this->data['csrf'] = $this->_get_csrf_nonce();

        //set the flash data error message if there is one
        $this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));

        //pass the user to the view
        $this->data['user'] = $user;
        $this->data['groups'] = $groups;
        $this->data['currentGroups'] = $currentGroups;

        $this->data['first_name'] = array(
            'name' => 'first_name',
            'id' => 'first_name',
            'type' => 'text',
            'value' => $this->form_validation->set_value('first_name', $user->first_name),
        );
        $this->data['location'] = array(
            'name' => 'location',
            'id' => 'location',
            'type' => 'text',
            'value' => $this->form_validation->set_value('location', $user->location),
        );
        $this->data['address'] = array(
            'name' => 'address',
            'id' => 'address',
            'type' => 'text',
            'value' => $this->form_validation->set_value('address', $user->address),
        );
        $this->data['phone'] = array(
            'name' => 'phone',
            'id' => 'phone',
            'type' => 'text',
            'value' => $this->form_validation->set_value('phone', $user->phone),
        );
        /*$this->data['logo'] = array(
            'name' => 'logo',
            'id' => 'logo',
            'type' => 'text',
            'value' => $this->form_validation->set_value('logo', $user->logo),
        );*/
        $this->data['password'] = array(
            'name' => 'password',
            'id' => 'password',
            'type' => 'password'
        );
        $this->data['password_confirm'] = array(
            'name' => 'password_confirm',
            'id' => 'password_confirm',
            'type' => 'password'
        );

        $this->_render_page('auth/edit_user', $this->data);
    }

    // create a new group
    function create_group() {
        $this->data['title'] = $this->lang->line('create_group_title');

        if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin()) {
            redirect('auth', 'refresh');
        }

        //validate form input
        $this->form_validation->set_rules('group_name', $this->lang->line('create_group_validation_name_label'), 'required|alpha_dash|xss_clean');
        $this->form_validation->set_rules('description', $this->lang->line('create_group_validation_desc_label'), 'xss_clean');

        if ($this->form_validation->run() == TRUE) {
            $new_group_id = $this->ion_auth->create_group($this->input->post('group_name'), $this->input->post('description'));
            if ($new_group_id) {
                // check to see if we are creating the group
                // redirect them back to the admin page
                $this->session->set_flashdata('message', $this->ion_auth->messages());
                redirect("auth", 'refresh');
            }
        } else {
            //display the create group form
            //set the flash data error message if there is one
            $this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));

            $this->data['group_name'] = array(
                'name' => 'group_name',
                'id' => 'group_name',
                'type' => 'text',
                'value' => $this->form_validation->set_value('group_name'),
            );
            $this->data['description'] = array(
                'name' => 'description',
                'id' => 'description',
                'type' => 'text',
                'value' => $this->form_validation->set_value('description'),
            );

            $this->_render_page('auth/create_group', $this->data);
        }
    }

    //edit a group
    function edit_group($id) {
        // bail if no group id given
        if (!$id || empty($id)) {
            redirect('auth', 'refresh');
        }

        $this->data['title'] = $this->lang->line('edit_group_title');

        if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin()) {
            redirect('auth', 'refresh');
        }

        $group = $this->ion_auth->group($id)->row();

        //validate form input
        $this->form_validation->set_rules('group_name', $this->lang->line('edit_group_validation_name_label'), 'required|alpha_dash|xss_clean');
        $this->form_validation->set_rules('group_description', $this->lang->line('edit_group_validation_desc_label'), 'xss_clean');

        if (isset($_POST) && !empty($_POST)) {
            if ($this->form_validation->run() === TRUE) {
                $group_update = $this->ion_auth->update_group($id, $_POST['group_name'], $_POST['group_description']);

                if ($group_update) {
                    $this->session->set_flashdata('message', $this->lang->line('edit_group_saved'));
                } else {
                    $this->session->set_flashdata('message', $this->ion_auth->errors());
                }
                redirect("auth", 'refresh');
            }
        }

        //set the flash data error message if there is one
        $this->data['message'] = (validation_errors() ? validation_errors() : ($this->ion_auth->errors() ? $this->ion_auth->errors() : $this->session->flashdata('message')));

        //pass the user to the view
        $this->data['group'] = $group;

        $this->data['group_name'] = array(
            'name' => 'group_name',
            'id' => 'group_name',
            'type' => 'text',
            'value' => $this->form_validation->set_value('group_name', $group->name),
        );
        $this->data['group_description'] = array(
            'name' => 'group_description',
            'id' => 'group_description',
            'type' => 'text',
            'value' => $this->form_validation->set_value('group_description', $group->description),
        );

        $this->_render_page('auth/edit_group', $this->data);
    }

    function _get_csrf_nonce() {
        $this->load->helper('string');
        $key = random_string('alnum', 8);
        $value = random_string('alnum', 20);
        $this->session->set_flashdata('csrfkey', $key);
        $this->session->set_flashdata('csrfvalue', $value);

        return array($key => $value);
    }

    function _valid_csrf_nonce() {
        if ($this->input->post($this->session->flashdata('csrfkey')) !== FALSE &&
                $this->input->post($this->session->flashdata('csrfkey')) == $this->session->flashdata('csrfvalue')) {
            return TRUE;
        } else {
            return FALSE;
        }
    }

    function _render_page($view, $data = null, $render = false) {

        $this->viewdata = (empty($data)) ? $this->data : $data;

        $view_html = $this->load->view($view, $this->viewdata, $render);

        if (!$render)
            return $view_html;
    }

    //upload a logo
    public function upload_logo($id) {
        
        if (!$this->ion_auth->logged_in() || !$this->ion_auth->is_admin()) {
            redirect('auth', 'refresh');
        }
        
        if ($this->input->is_ajax_request() == TRUE ) {
              
            $data['id'] = $id;

            $config['upload_path'] = 'img/logos/';
            $config['allowed_types'] = 'gif|jpg|jpeg|png';
            $config['max_size'] = '2000';
            $config['max_width'] = '2024';
            $config['max_height'] = '2008';

            $this->load->library('upload', $config);
            //SI LA IMAGEN FALLA AL SUBIR MOSTRAMOS EL ERROR EN LA VISTA UPLOAD_VIEW
            if (!$this->upload->do_upload('logo')) {
                $data['message'] = $this->upload->display_errors();
                $this->load->view('ajax/upload_logo_response', $data);
            } else {
            //EN OTRO CASO SUBIMOS LA IMAGEN, CREAMOS LA MINIATURA Y HACEMOS 
            //ENVÍAMOS LOS DATOS AL MODELO PARA HACER LA INSERCIÓN
                $file_info = $this->upload->data();
                //USAMOS LA FUNCIÓN create_thumbnail Y LE PASAMOS EL NOMBRE DE LA IMAGEN,
                //ASÍ YA TENEMOS LA IMAGEN REDIMENSIONADA
                $this->_create_thumbnail($file_info['file_name']);
                //$data['upload_data'] =  $this->upload->data();
                $imagen = $file_info['raw_name'].'_thumb'.$file_info['file_ext'];
                $subir = $this->ion_auth->upload_logo($id,$imagen);      
                $data['message'] = 'El logo se ha subido con éxito';
                $data['image_name'] = $imagen;
                $this->load->view('ajax/upload_logo_response', $data);
            }
        }
    }

    //FUNCIÓN PARA CREAR LA MINIATURA A LA MEDIDA QUE LE DIGAMOS
    function _create_thumbnail($filename) {
        $config['image_library'] = 'gd2';
        //CARPETA EN LA QUE ESTÁ LA IMAGEN A REDIMENSIONAR
        $config['source_image'] = 'img/logos/' . $filename;
        $config['create_thumb'] = TRUE;
        $config['maintain_ratio'] = TRUE;
        //CARPETA EN LA QUE GUARDAMOS LA MINIATURA
        $config['new_image'] = 'img/logos/';
        $config['width'] = 120;
        $config['height'] = 120;
        $this->load->library('image_lib', $config);
        $this->image_lib->resize();
    }

}
